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Showing 1 to 20 of 47 for “"Burning rate"”.
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Determination of the burning rate of small diameter aluminum wire
… high speed motion picture photography to burning rate data. Because combustion of aluminum evolves oxide smoke which obscures motion picture vision, a method utilizing an electronic counting circuit and infrared sensitive cadmium sulfide photo conductive cells in lieu of motion picture …
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The effect of radiative heat feedback on burning rate of metalized propellants
Restriction data tranferred 2014-07-01T11:27:36-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission
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Modifying burning rate and agglomeration size in aluminized composite solid propellants using mechanically activated metals
… physical mixture of aluminum and magnesium. The burning rate of propellant using the prepared powder is increased.</p> <p>MA Al/Mg powders as long as with comparable physical mixture are applied in propellant formulation with AP/HTPB. In order to quantify the effect of changing Mg percent. …
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The burning rate of aluminum and magnesium wires in pure oxygen and oxygen-water vapor atmosphere at higher pressures
… on the combustion reaction, the propagation rate of the burning zone along the wire was measured. It was believed that the participation of the condensed combustion products limited the reaction rate through their effect on the diffusion of oxygen. The products accumulation around the flame …
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Experimental Investigation of Liquid and Gas Fueled Flames Towards the Development of a Burning Rate Emulator (BRE) for Microgravity Applications
Laminar steady burning on flat plates was studied at various orientations with respect to gravity. Flat wicks were saturated with methanol or ethanol. Steady flames were obtained, and ranged from boundary layer flames to plume-type burning. Maximum burning rate per unit area was recorded at an …
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Microwave data reduction technique for calculation of solid propellant burning rates
… measurement system for obtaining continuous burning-rate information from a solid propellant slab-burning rocket motor is described. A previous derivative-based method for reducing the microwave data is reviewed and an improved data reduction technique is introduced. The improved microwave …
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Controlling Object Heat Release Rate using Geometrical Features
… the effect of complex geometries on the burning rate of materials made using additive manufacturing. Controlling heat release rate has applicability in limiting fire hazards as well as for designing fuels for optimal burning rate. The burning rate of a structure is a function of the …
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In Situ Flame Structure Imaging of Composite Propellants using High-Speed Planar Laser-Induced Fluorescence
Ammonium perchlorate (AP) is the most commonly used oxidizer in solid rocket propellants due to its availability, high oxygen balance, and combustion characteristics. Models of AP composite propellants have been made since the 1950s and have become highly advanced in recent years. However, …
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Thermal Interaction of Inert Additives in Energetic Materials
… high energy density and various energy release rates. The energy release rate, determined by how fast the material burns, is often thought to be proportional to the bulk thermal diffusivity of the material. However, the inclusion of insulating inert particles in energetic materials has shown …
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Simplified Combustion Modeling of Composite Propellants
A two-dimensional, steady state model of a burning composite propellant is developed to study the characteristics of the combustion process. The solid composite is a periodic sandwich unit comprised of two oxidizer laminates separated by a fuel binder layer. Included in the model are essential …
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An experimental study of solid propellant deflagration using high speed motion pictures and postfire residue analysis
… propellants were investigated through strand burning in a windowed combustion bomb at 500 psi and 1000 psi. Postfire particle residues were analyzed with a scanning electron microscope and found to have bi-modal size distributions. The mean diameter of the fine particle distribution was …
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Development of a Model for Flaming Combustion of Double-Wall Corrugated Cardboard
… Thermakin modeling environment to describe the burning rate of corrugated cardboard. The model parameters corresponding to the thermal properties of the corrugated cardboard layers were determined through analysis of data collected in cone calorimeter tests conducted with incident heat fluxes in …
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Combustion of Coal in Shallow Fluidised Beds
… carbon sphere. Mathematical expression for the burning rate of carbon is derived. Account is taken of the fact that the void age, through which the diffusion of gas occurs, varies in space. This affects both the burning rate and particle/gas Sherwood number. The burning rate of carbon has been …
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An experimental investigation of the effects of acceleration on the combustion characteristics of an aluminized composite solid propellant
… the acceleration loads directed normal into the burning surface, normal away from burning surface, and at angles of 30° and 60° into the burning surface. As the normal acceleration load into the burning surface increased, the burning rate and the amount of residue retained within the motor …
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Physical properties, evaporation and combustion characteristics of nanofluid-type fuels
… A droplet stream flame was used to measure the burning rate of ethanol droplets with the addition of aluminum (80nm) and graphite nanoparticles (50nm and 100nm). Results indicate that as particle concentration is increased, the burning rate of the resulting nanofluid droplet also increases. The …
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Stochastic Modelling and Optimal Control of Compartment Fires
… Council Canada (NRCC) are developed and calibrated. One of the deterministic models is a fuel driven model and the other is an oxygen driven model. The oxygen driven deterministic model is converted to a stochastic model based on the theory of Martingales, and used as an input to calculate a …
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Experimental and computational study of flames venting externally during full scale flashover fires
… flames of internal ventilation conditions, burning rate, burn room size and wind have been studied in detail. Secondary fires and glass breakage have been examined.. Repeatable experimental data and reliable information on externally venting flames have been generated for numerical model …
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Experimental and numerical studies of whirling fires
… destructive than ordinary fires due to greater burning rate, higher concentration of heat release in a small region of the plume core, increased radiative output and unexpected smoke movement. The effects of rotation upon the structure and behaviour of buoyant flames have not yet been thoroughly …
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Fertile free fuels for plutonium and minor actinides burning in LWRs
… trans-uranium (TRU) fuel. The transmutation rate and the transmuted fraction of initial loadings are calculated using CASMO-4. Different inert matrix fuels have similar burning abilities in terms of how much and how fast the Pu, MA or TRU can be burned, and they are all superior to the mixed …
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SPILL AND BURNING BEHAVIOR OF FLAMMABLE LIQUIDS
… ml for gasoline and denatured alcohol. Average burning rates for both unconfined liquid fuel spill fires increased linearly with increasing volume spilled. A liquid spill thickness model was developed and compared to experimental data. Comparisons showed good predictions for half of the liquids …
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